JP2011521315A - マルチプロセッサ/マルチスレッド環境における記憶要求を調整するための装置、システム及び方法 - Google Patents
マルチプロセッサ/マルチスレッド環境における記憶要求を調整するための装置、システム及び方法 Download PDFInfo
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Abstract
Description
なお、本出願は、参照により本明細書に援用される、David Flynn等によって2008年4月6日に出願された「Apparatus, System, and Method for coordinating Storage Requests in a Multi-Processor/Multi-Thread Environment」と題する米国特許出願第12/08435号に対する優先権を主張する。
さらに、本発明の上記の特徴、利点及び特性は、1又は複数の実施形態において任意の適切な方法で組み合わせられる場合がある。或る特定の実施形態の具体的な特徴又は利点のうちの1又は複数を用いることなく本発明が実施される場合があることは当業者には理解されよう。他の事例では、或る特定の実施形態において、さらに別の特徴及び利点が認識される場合があるが、それらは本発明の全ての実施形態の中に存在しない場合がある。
本発明のこれらの特徴及び利点は、以下の説明及び添付の特許請求の範囲からさらに十分に明らかになるか、又は以下に記述されるように本発明を実施することにより明らかになるであろう。
Claims (25)
- 記憶要求を調整するための装置であって、該装置は、
第1の記憶要求を受信するのに応答して第1の追加データ記憶コマンドを生成する追加/無効化モジュールであって、該第1の記憶要求はデータ記憶デバイス上に格納されるデータセグメントのデータを第1のデータで上書きする要求を含み、該追加/無効化モジュールは、第2の記憶要求を受信するのに応答して第2の追加データ記憶コマンドを生成し、該第2の記憶要求は前記データセグメントの既存のデータを第2のデータで上書きする要求を含み、前記第1のデータ及び前記第2のデータは前記データセグメント内の共通オフセットに格納されることになる重複するデータの少なくとも一部を含み、前記第2の記憶要求は前記第1の記憶要求後に受信され、該追加/無効化モジュールは、該第1の記憶要求に応答して、前記データセグメントのデータを無効としてマークすることによってインデックスを更新し、無効としてマークされた該データは該第1のデータに置き換えられルデータを含み、該追加/無効化モジュールは、前記第2の記憶要求に応答して、前記データセグメントのデータを無効としてマークすることによってインデックスを更新し、無効としてマークされた該データは該第2のデータに置き換えられるデータを含む、追加/無効化モジュールと、
前記第1のデータに基づいて前記インデックスを更新すると共に、前記第2のデータに基づいて前記インデックスを更新する再構成モジュールであって、該更新されるインデックスは、該インデックスが前記第2のデータに基づいて更新される前に前記第1のデータに基づいて更新されるときに、又は該インデックスが前記第1のデータに基づいて更新される前に前記第2のデータに基づいて更新されるときに、前記第2のデータが前記第1のデータよりも最新であることを指示するように編成される、再構成モジュールと
を備え、前記追加/無効化モジュールが前記インデックスを更新し終わるまで、該追加/無効化モジュールは、前記インデックスへのアクセスを防ぎ、前記再構成モジュールが前記インデックスを更新し終わるまで、該再構成モジュールは、前記インデックスへのアクセスを防ぐことを特徴とする装置。 - 請求項1記載の装置において、該装置はさらにデータロケーション更新モジュールを備え、該データロケーション更新モジュールは、前記インデックスを、前記データ記憶デバイスが前記第1のデータを格納した場所を指示する第1の物理的なロケーションで更新すると共に、前記インデックスを、前記データ記憶デバイスが前記第2のデータを格納した場所を指示する第2の物理的なロケーションで更新し、前記データ記憶デバイスが前記第1のデータ及び前記第2のデータを格納した物理的なロケーションは前記データ記憶デバイスから受信され、前記更新されるインデックスは、前記インデックスが前記第2の物理的なロケーションに基づいて更新される前に前記第1の物理的なロケーションに基づいて更新されるときに、又は前記インデックスが前記第1の物理的なロケーションに基づいて更新される前に前記第2の物理的なロケーションに基づいて更新されるときに、前記第2の物理的なロケーションが前記第1の物理的なロケーションよりも最新であることを指示するように編成され、前記データロケーションモジュールが前記インデックスを更新し終わるまで、前記データロケーション更新モジュールは、前記インデックスへのアクセスを防ぐことを特徴とする装置。
- 請求項2記載の装置において、前記追加/無効化モジュールによる記憶要求の処理は前記再構成モジュールによる処理の前に行なわれ、前記再構成モジュールによる該記憶要求の処理は前記データロケーションモジュールによる処理の前に行なわれることを特徴とする装置。
- 請求項3記載の装置において、前記追加/無効化モジュール、前記再構成モジュール及び前記データロケーション更新モジュールのいずれかによる前記第1の記憶要求の処理は、前記追加/無効化モジュール、前記再構成モジュール及び前記データロケーション更新モジュールのいずれかによる前記第2の記憶要求の処理の前又は後に行なわれることを特徴とする装置。
- 請求項2記載の装置において、前記追加/無効化モジュール、前記再構成モジュール及び前記データロケーション更新モジュールのそれぞれのインスタンスは2つ以上のスレッドにおいて実行され、前記追加/無効化モジュール、前記再構成モジュール又は前記データロケーション更新モジュールが前記インデックスを更新し終わるまで、該追加/無効化モジュール、該再構成モジュール及び該データロケーション更新モジュールの前記インスタンスはそれぞれ、前記インデックスへのアクセスを防ぐことを特徴とする装置。
- 請求項2記載の装置において、前記追加/無効化モジュール、前記再構成モジュール及び前記データロケーション更新モジュールのそれぞれのインスタンスは並列に動作する2つ以上のプロセッサにおいて実行され、前記追加/無効化モジュール、前記再構成モジュール又は前記データロケーション更新モジュールが前記インデックスを更新し終わるまで、該追加/無効化モジュール、該再構成モジュール及び該データロケーション更新モジュールの各インスタンスは、前記インデックスへのアクセスを防ぐことを特徴とする装置。
- 前記読出し要求を含む記憶要求に応答して前記データセグメントの少なくとも一部を読み出す読出しモジュールをさらに備え、前記第1の記憶要求が前記追加/無効化モジュール、前記再構成モジュール及び前記データロケーション更新モジュールによってサービスされるまで、前記要求される読出しをサービスするのを遅らせる読出し遅延モジュールをさらに備える、請求項2に記載の装置。
- 請求項7記載の装置において、前記データセグメントの少なくとも一部を読み出す前記記憶要求は、前記第1の記憶要求後かつ前記第2の記憶要求前に前記装置によって受信され、前記読出し遅延モジュールは、前記第1の記憶要求及び前記第2の記憶要求の両方が前記追加/無効化モジュール、前記再構成モジュール及び前記データロケーション更新モジュールによってサービスされるまで、前記読出し要求をサービスするのを遅らせることを特徴とする装置。
- 請求項1記載の装置において、シーケンス番号を記憶要求と関連付けるシーケンス番号モジュールをさらに備え、割り当てられるシーケンス番号は、記憶要求が前記装置によって受信される順序を表し、前記再構成モジュールは、前記第1の記憶要求及び前記第2の記憶要求のそれぞれに割り当てられるシーケンス番号を用いることによって、前記第2のデータが前記第1のデータよりも最新であることを指示するように前記インデックスを編成することを特徴とする装置。
- 請求項1記載の装置において、前記第2のデータが前記第1のデータよりも最新であることを指示するように前記インデックスを編成することは、前記重複するデータにマッピングされる前記インデックスの部分を前記第2のデータで更新すること、及び前記再構成モジュールが、前記第1のデータに基づいて前記インデックスを更新する前に、前記第2のデータに基づいて前記インデックスを更新する場合には、前記第2のデータへの前記マッピングを保持することを含むことを特徴とする装置。
- 請求項1記載の装置において、前記追加/無効化モジュールは前記データセグメントの既存のデータを上書きする3つ以上の記憶要求を受信し、前記再構成モジュールは、前記再構成モジュールが前記記憶要求のデータを用いて前記インデックスを更新する順序に関係なく、前記記憶要求の到着順に基づいて、前記記憶要求のデータを用いて前記インデックスを編成することを特徴とする装置。
- 請求項1記載の装置において、前記インデックスは2つ以上の領域にさらに分割されると共に、前記インデックスの第1の領域に関連する記憶要求がサービスされ、一方、前記追加/無効化モジュール及び前記再構成モジュールのうちの1つ又は複数のモジュールの付加的なインスタンスが、第2の領域に関連する記憶要求をサービスする間に、前記インデックスの第2の領域へのアクセスを防ぐことを特徴とする装置。
- 請求項1記載の装置において、前記第1の記憶要求は第1のクライアントから送信され、前記第2の記憶要求は第2のクライアントから送信されることを特徴とする装置。
- 請求項1記載の装置において、前記第1の要求に応答して、置き換えられる前記データセグメントの前記データを無効としてマークすることによって前記インデックスを更新することは、ビットマップの1つ又は複数のビットをマークすることをさらに含み、前記ビットマップ内の前記ビットは、前記第1のデータ及び前記第2のデータに置き換えられる前記データセグメントの前記データが存在する、前記データ記憶デバイス内の1つ又は複数のロケーションに対応することを特徴とする装置。
- 請求項1記載の装置において、前記第1の要求に応答して、置き換えられる前記データセグメントの前記データを無効としてマークすることによって前記インデックスを更新することは、前記再構成モジュールが前記第1のデータ及び前記第2のデータに基づいて前記インデックスを更新するまで、前記データセグメント全体を無効として一時的にマークし、その後、置き換えられるデータ以外の前記データセグメントのデータが有効であることを指示するように前記インデックスを更新することをさらに含むことを特徴とする記載の装置。
- 請求項1記載の装置において、前記第1の要求に応答して、置き換えられる前記データセグメントの前記データを無効としてマークすることによって前記インデックスを更新することは、前記第1のデータ及び前記第2のデータに置き換えられる前記データセグメントの部分が無効であることを指示すると共に前記第1のデータ及び前記第2のデータに置き換えられない前記データセグメントの部分が有効であることを指示するリストを生成することをさらに含むことを特徴とする装置。
- 請求項1記載の装置において、前記第1の記憶要求及び前記第2の記憶要求のうちの1つ又は複数は、概ねデータを伴うことなく受信されることを特徴とする装置。
- 請求項1記載の装置において、前記第1の追加データ記憶コマンド及び前記第2の追加データ記憶コマンドのうちの1つ又は複数は、概ねデータを伴うことなく、前記データ記憶デバイスに送信されることを特徴とする装置。
- 請求項1記載の装置において、記憶要求及び追加データ記憶コマンドのうちの少なくとも一方が、ダイレクトメモリアクセス(「DMA」)プロセス又はリモートDMA(「RDMA」)プロセスを開始して、前記データセグメントのデータを前記データ記憶デバイスに転送することを特徴とする装置。
- 記憶要求を調整するためのシステムであって、
データ記憶デバイスと、
前記データ記憶デバイスを制御する記憶コントローラとを備え、前記記憶コントローラは、
データ記憶デバイス上に格納されるデータセグメントのデータを第1のデータで上書きするための第1の記憶要求を受信するのに応答して第1の追加データ記憶コマンドを生成し、該データセグメントの既存のデータを第2のデータで上書きするための第2の記憶要求を受信するのに応答して第2の追加データ記憶コマンドを生成する追加/無効化モジュールであって、該第1のデータ及び該第2のデータは前記データセグメント内の共通オフセットに格納されることになる重複するデータの少なくとも一部を含み、前記第2の記憶要求は前記第1の記憶要求後に受信され、該追加/無効化モジュールは、該第1の記憶要求に応答して、前記データセグメントのデータを無効としてマークすることによってインデックスを更新し、無効としてマークされた該データは該第1のデータに置き換えられるデータを含み、該追加/無効化モジュールは、前記第2の記憶要求に応答して、前記データセグメントのデータを無効としてマークすることによってインデックスを更新し、無効としてマークされた該データは該第2のデータに置き換えられるデータを含む、追加/無効化モジュールと、
前記第1のデータに基づいて前記インデックスを更新すると共に、前記第2のデータに基づいて前記インデックスを更新する再構成モジュールであって、該更新されるインデックスは、該インデックスが前記第2のデータに基づいて更新される前に前記第1のデータに基づいて更新されるときに、又は該インデックスが前記第1のデータに基づいて更新される前に前記第2のデータに基づいて更新されるときに、前記第2のデータが前記第1のデータよりも最新であることを指示するように編成される、再構成モジュールと
を備え、前記追加/無効化モジュールが前記インデックスを更新し終わるまで、該追加/無効化モジュールは、前記インデックスへのアクセスを防ぎ、前記再構成モジュールが前記インデックスを更新し終わるまで、該再構成モジュールは、前記インデックスへのアクセスを防ぐことを特徴とするシステム。 - 請求項20記載のシステムにおいて、前記データ記憶デバイスは固体記憶デバイスを含むことを特徴とするシステム。
- 請求項20記載のシステムにおいて、前記第1の記憶要求及び前記第2の記憶要求は別々の要求側デバイスから受信され、前記別々の要求側デバイスはクライアント及びサーバのうちの1つ又は複数を含むことを特徴とするシステム。
- 請求項22記載のシステムにおいて、前記要求側デバイスのうちの少なくとも1つはクライアントを含み、前記追加/無効化モジュール及び前記再構成モジュールは前記クライアントから独立して動作することを特徴とするシステム。
- 請求項20記載のシステムにおいて、該システムは更にサーバを備え、前記記憶コントローラは前記サーバ内にあることを特徴とするシステム。
- 記憶要求を調整するための動作を実行するために実行可能なコンピュータ使用可能プログラムコードを有するコンピュータ読み取り可能記憶媒体を含むコンピュータプログラム製品であって、該コンピュータプログラム製品は、
データ記憶デバイス上に格納されるデータセグメントの既存のデータを第1のデータで上書きする第1の記憶要求を受信するのに応答して第1の追加データ記憶コマンドを生成するステップ、
前記データセグメントの既存のデータを第2のデータで上書きする第2の記憶要求に応答して第2の追加データ記憶コマンドを生成するステップであって、前記第1のデータ及び該第2のデータは前記データセグメント内の共通オフセットに格納されることになる重複するデータの少なくとも一部を含み、前記第2の記憶要求は前記第1の記憶要求後に受信される、生成するステップと、
前記第1の記憶要求に応答して、前記データセグメントのデータを無効としてマークすることによってインデックスを更新するステップであって、該無効としてマークされるデータは前記第1のデータに置き換えられる、更新するステップと、
前記第2の記憶要求に応答して、前記データセグメントのデータを無効としてマークすることによってインデックスを更新するステップであって、該無効としてマークされるデータは前記第2のデータに置き換えられ、前記第1の記憶要求及び前記第2の記憶要求のうちの一方に対する追加データ記憶コマンドが生成されると共に、前記第1の記憶要求及び前記第2の記憶要求のうちの一方に対して前記データセグメントの前記データを無効としてマークすることによって前記インデックスが更新されるまで、前記インデックスへのアクセスを防ぐ、更新するステップと、
前記第1のデータに基づいて前記インデックスを更新するステップと、
前記第2のデータに基づいて前記インデックスを更新するステップであって、前記更新されるインデックスは、前記インデックスが前記第2のデータに基づいて更新される前に前記第1のデータに基づいて更新されるか、又は前記インデックスが前記第1のデータに基づいて更新される前に前記第2のデータに基づいて更新されるときに、前記第2のデータが前記第1のデータよりも最新であることを指示するように編成される、更新するステップと
を含み、前記インデックスが前記第1のデータ及び前記第2のデータのうちの一方に基づいて更新されるまで、前記インデックスへのアクセスを防ぐことを特徴とするコンピュータプログラム製品。
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2015162002A (ja) * | 2014-02-26 | 2015-09-07 | 富士通株式会社 | 記憶制御装置、記憶制御方法および記憶制御プログラム |
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US9170754B2 (en) | 2015-10-27 |
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US20110029496A1 (en) | 2011-02-03 |
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